Get ready for spooky sips with these Halloween straw top covers for your 30 - 40 oz tumblers. The set includes 4 pieces featuring colorful and festive designs perfect for the season. Whether you're hosting a Halloween party or just looking to add some fun to your daily routine, these covers will do the trick. Made for vacuum flasks and mugs, they are a perfect fit for your favorite tumblers. Add a touch of Halloween spirit to your drinkware with these vibrant straw top covers!